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/**
* Oshi (https://github.com/oshi/oshi)
*
* Copyright (c) 2010 - 2018 The Oshi Project Team
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Maintainers:
* dblock[at]dblock[dot]org
* widdis[at]gmail[dot]com
* enrico.bianchi[at]gmail[dot]com
*
* Contributors:
* https://github.com/oshi/oshi/graphs/contributors
*/
package oshi.software.os.mac;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.sun.jna.Pointer;
import com.sun.jna.ptr.IntByReference;
import oshi.jna.platform.mac.CoreFoundation;
import oshi.jna.platform.mac.CoreFoundation.CFDictionaryRef;
import oshi.jna.platform.mac.CoreFoundation.CFMutableDictionaryRef;
import oshi.jna.platform.mac.DiskArbitration;
import oshi.jna.platform.mac.DiskArbitration.DADiskRef;
import oshi.jna.platform.mac.DiskArbitration.DASessionRef;
import oshi.jna.platform.mac.IOKit;
import oshi.jna.platform.mac.SystemB;
import oshi.jna.platform.mac.SystemB.Statfs;
import oshi.software.os.FileSystem;
import oshi.software.os.OSFileStore;
import oshi.util.platform.mac.CfUtil;
import oshi.util.platform.mac.IOKitUtil;
import oshi.util.platform.mac.SysctlUtil;
/**
* The Mac File System contains {@link OSFileStore}s which are a storage pool,
* device, partition, volume, concrete file system or other implementation
* specific means of file storage. In Mac OS X, these are found in the /Volumes
* directory.
*
* @author widdis[at]gmail[dot]com
*/
public class MacFileSystem implements FileSystem {
private static final long serialVersionUID = 1L;
private static final Logger LOG = LoggerFactory.getLogger(MacFileSystem.class);
// Regexp matcher for /dev/disk1 etc.
private static final Pattern LOCAL_DISK = Pattern.compile("/dev/disk\\d");
/**
* Gets File System Information.
*
* @return An array of {@link OSFileStore} objects representing mounted
* volumes. May return disconnected volumes with
* {@link OSFileStore#getTotalSpace()} = 0.
*/
@Override
public OSFileStore[] getFileStores() {
// Open a DiskArbitration session to get VolumeName of file systems with
// bsd names
DASessionRef session = DiskArbitration.INSTANCE.DASessionCreate(CfUtil.ALLOCATOR);
if (session == null) {
LOG.error("Unable to open session to DiskArbitration framework.");
}
// List of file systems
List fsList = new ArrayList<>();
// Use getfsstat to find fileSystems
// Query with null to get total # required
int numfs = SystemB.INSTANCE.getfsstat64(null, 0, 0);
if (numfs > 0) {
// Create array to hold results
Statfs[] fs = new Statfs[numfs];
// Fill array with results
numfs = SystemB.INSTANCE.getfsstat64(fs, numfs * new Statfs().size(), SystemB.MNT_NOWAIT);
for (int f = 0; f < numfs; f++) {
// Mount on name will match mounted path, e.g. /Volumes/foo
// Mount to name will match canonical path., e.g., /dev/disk0s2
// Byte arrays are null-terminated strings
// Get volume name
String volume = new String(fs[f].f_mntfromname).trim();
// Skip system types
if (volume.equals("devfs") || volume.startsWith("map ")) {
continue;
}
// Set description
String description = "Volume";
if (LOCAL_DISK.matcher(volume).matches()) {
description = "Local Disk";
}
if (volume.startsWith("localhost:") || volume.startsWith("//")) {
description = "Network Drive";
}
// Set type and path
String type = new String(fs[f].f_fstypename).trim();
String path = new String(fs[f].f_mntonname).trim();
// Set name and uuid
String name = "";
String uuid = "";
// Use volume to find DiskArbitration volume name and search for
// the registry entry for UUID
String bsdName = volume.replace("/dev/disk", "disk");
if (bsdName.startsWith("disk")) {
// Get the DiskArbitration dictionary for this disk,
// which has volumename
DADiskRef disk = DiskArbitration.INSTANCE.DADiskCreateFromBSDName(CfUtil.ALLOCATOR, session,
volume);
if (disk != null) {
CFDictionaryRef diskInfo = DiskArbitration.INSTANCE.DADiskCopyDescription(disk);
if (diskInfo != null) {
// get volume name from its key
Pointer volumePtr = CoreFoundation.INSTANCE.CFDictionaryGetValue(diskInfo,
CfUtil.getCFString("DAVolumeName"));
name = CfUtil.cfPointerToString(volumePtr);
CfUtil.release(diskInfo);
}
CfUtil.release(disk);
}
// Search for bsd name in IOKit registry for UUID
CFMutableDictionaryRef matchingDict = IOKitUtil.getBSDNameMatchingDict(bsdName);
if (matchingDict != null) {
// search for all IOservices that match the bsd name
IntByReference fsIter = new IntByReference();
IOKitUtil.getMatchingServices(matchingDict, fsIter);
// getMatchingServices releases matchingDict
// Should only match one logical drive
int fsEntry = IOKit.INSTANCE.IOIteratorNext(fsIter.getValue());
if (fsEntry != 0 && IOKit.INSTANCE.IOObjectConformsTo(fsEntry, "IOMedia")) {
// Now get the UUID
uuid = IOKitUtil.getIORegistryStringProperty(fsEntry, "UUID");
if (uuid == null) {
uuid = "";
} else {
uuid = uuid.toLowerCase();
}
IOKit.INSTANCE.IOObjectRelease(fsEntry);
}
IOKit.INSTANCE.IOObjectRelease(fsIter.getValue());
}
}
File file = new File(path);
if (name.isEmpty()) {
name = file.getName();
// getName() for / is still blank, so:
if (name.isEmpty()) {
name = file.getPath();
}
}
// Add to the list
fsList.add(new OSFileStore(name, volume, path, description, type, uuid, file.getUsableSpace(),
file.getTotalSpace()));
}
}
// Close DA session
CfUtil.release(session);
return fsList.toArray(new OSFileStore[fsList.size()]);
}
@Override
public long getOpenFileDescriptors() {
return SysctlUtil.sysctl("kern.num_files", 0);
}
@Override
public long getMaxFileDescriptors() {
return SysctlUtil.sysctl("kern.maxfiles", 0);
}
}
